US2010861A - Vulcanizing device - Google Patents

Description

Aug. 13, 1935. H. v. JAMES VULCANIZI-NG DEVICE Filed May 12, 1.934

fik/mw kiw 5 Patented Aug. 13, 1935 UNITED STATES PATENT OFFICE ,WULCANIZING DEVICEJ HaroldV. James, Kanarado, Kans. Application May 12, 1934, serial nof'zzasoa f 9 Claims. (Ql. 18 --1 8) This invention relates to atire repair device andhas foritsprincipal object the provision of a simple unitary construction which can be employed for both internal and external curing of easing repairs as well as for inner tube patch ing. I

struct the device the vulcanizing surface whereas the remaining or surrounding. portions of the casing will be held out. of contact with the heated surface.

Otherobjeots are to incorporate in a structure of this nature means for quicklyremoving or replacing casings thereon; means for employing the same heating element. forboth casing and inner tube repairing; and means for accommodating castings of various sizes. 7

Other objects and advantages reside in the detail construction of the invention, which is designed for simplicity, economy, and efficiency.

, These will become more apparent from the following-description. 1 I I In the following detailed description of the invention reference is bad to the accompanying drawing which forms, a part hereof. Like numerals refer to like parts in all views of the drawingand throughout the description.

it In the drawing:

Fig. 1 is-a perspective viewof the complete device set up for a casing repair.

Fig. 2 is a detail fragmentary detail view illustrating the method of repairing an inner tube thereon. I i

Fig. 3 is a detail view illustrating a typical shield of the type employed for increasing diameter of the casingmold.

The invention. is arranged to be attached to any suitable supporting surface such as a work bench I0. The device consists of a base plate H which maybe attachedto the bench I by means of suitable attachmentbolts I2. A vertical pressure or jack screw I 3 is threaded through the plate I2 terminating at its lower extremity in a hand wheel 54. An electrically heated casing mold I5 is pivotally supported on the upper extremity of the screw I3. The mold I5 isshaped to conform to the inner surface of a typical tire casing. Its size can be increased for larger casings by placing thereon half shells Ifisuch as illustrated inFig. 3. One of the half shells I 6 is placed on each side of the mold I5 soas to increase its entire diameter. The shells I5 are notched as shown .at IE to pass around the jack screw I3. r I

The casing is clamped about ,the mold .I5 by means ofa relatively thin flexible, metal clamping band IT. The band I! terminates at its Another object of the inventionis to so conthat the portion of the cas ing being repaired will be snugly molded against with suitable notches?!) for receiving the links of the chains I 9. Bracket members 2| extend oppositely outward from the extremities of the mold I5,terminating in depending links 22. Each of the linksZZ is notched, as shown at 23, to adjustably support a cross arm 24. a

In using the casing portion of the device, the

casing to be repaired is placed over the mold i5, preferably with the jack screw I3 in a lowcred. position. The cross bars 24 are then forced upwardly against the beads of the casingand engaged in the'notches 23. The clamping band I? is then placed over the casing with its chains crossed and positioned inthe notches-2U. The jack screw 23 is then tightened so as to ele vate the mold I5 and force it into and against the shield I? with the desired pressure. As the mold moves upwardly, the cross arms will lift the casing beads and elevate the casing at the extremities of the mold I5 so that it will not hang over the hot 'molcl, and become burned at the extremities thereof. The cross arms in lifting the casing at each extremity of the mold also prevent the weight of the casing from distorting it during the curing operation so that it will not be out of round. They also serve to 'compress the surface or tread portion of the tire at the point of repair so that the injury will be closed and oversize prevented. For this reason casings repaired upon this ma chine do not bump or pound upon the road.

It is desired to call attentionwto the fact that thecrossed chains I9 notonly pull the band I I downwardly against the casing, but will also pull it inwardly at the bead so as to bring it into snug contact throughout its entire interior. Thus efficient curing of repairs adjacent the bead can be accomplished. I

Current-is supplied to the mold througha suitable conductor 25 so that the desired heat may be placed on the interior of the casing. For certain repairs this heat is sufiicient; for other repairs it is necessary to supply heat to the exterior of the casing. This is accomplishedby means of heating plate 26 provided with a suitable handle Icurrent is supplied to a heating element of the plate 26 through a suitable conductor 30.

The heatings of both the mold l5 and the plate a ,25 are provided withthei'mostatic switches 46 bymeans of which they may be pre-set to produce any desired temperature so that a perfect cure may be had.

Thetube repair portion of the device comprises a frame 3! provided with a shelf 32 arranged for attachment to the base plate I! by means of a suitable clamp bolt 33. A bracket member 34 is hinged to the upper extremity of the frame 3! upon a suitable hinge pin 35. A vertically positioned push rod 36 is mounted in the frame 3i terminating at its upper extremity in a pressure head 3?. The lower extremity of the rod 38 is hinged at 38 adjacent the forward extremity of a hinge member 39.

The hinge member 39 is hinged upon the lower extremity of the frame 3!. A tension spring it! constantly tends to urge the hinge member 39 and the pressure head 31 upwardly. This upward action is counteracted when desired by a cam lever M mounted upon the push rod 36. As the lever ll'is swung upwardly it will allow the pressure head 3i to move upwardly as shown in Fig. 2, and when swung downwardly, will pry the push rod 36 downwardly and lock it in the lowered position of Fig. 1. The tension in the spring in may be adjusted as desired by means of an adjusting nut 42.

The heating plate 26 is formed with grooves 43 in its sides. The bracket member 3 5 is U- shaped with forwardly extending extremities Ml. This construction allows the plate 25 to be removed from the casing repair portion of the device and slid into'the bracket member 34 with the prongs A l engaging the grooves 43. In the latter position the plate is turned with its flat side 28 downwardly, as shown in Fig. 2.

Thetube to be repaired is placed over the pressure head 31, or over a block resting upon the head 37. The lever M is then released and allowed to move upwardly. This allows the spring All to force the pressure head against the tube and the tube against the hot face of the plate 26. The tube can be quickly removed when cured by simply depressing the leved 4|.

The pivoted attachment of the frame 35 on the bolt 33 allows it to be swung to any convenient angle for use. The pivoted attachment of the bracket member 34 on the pin 35 allows the hot plate 26to be swung to any desired positionover the pressure head to properly position it over the pressure head 31.

While a specific form of the improvement has been described and illustrated herein, it is desired to be understood that the same may be varied, within the scope of the appended claims, without departing from the spirit of the invention.

* Having thus described the invention, what is claimed and desired secured by Letters Patent l. A vulcanizing device comprising: a curved mold adapted to fit the interior of a tire casing; means for drawing said casing snugly against said mold; and means for contacting the bead of said casing at the extremities of said mold to support said casing over said mold. 2. A vulcanizing device comprising: a curved mold adapted to fit the interior of a tire casing; means for drawing said casing snugly against said mold; a heating plate; a curved face on said heating plate; resilient means for clamping said curved face against said drawing means; said heating plate being provided with grooves in its edges; and a bracket member supported adjacent said mold so as to support said heating plate by means of said grooves.

3. A casing vulcanizer comprising: a base plate;

a jack screw vertically threaded through said base plate; a segmental, casing-shaped, electrically heated, mold pivotally supported on said jack screw; a flexible, metallic band shaped to fit over said mold; and chains depending from said band, there being notches in said base plate for receiving the links of said chains for locking said hand down upon said mold.

4. In a tire casing vulcanizer having a segmental, casing shaped, electrically heated mold adapted to receive a casing in a depended position; supporting members extending oppositely outward from the extremity of said mold; and cross arms supported by said supporting member so as to contact with the bead of a casing and support it over said mold.

5. In a tire casing vulcanizer having a segmental, casing shaped, electrically heated mold adapted to receive a casing in a depended position; supporting members extending oppositely outward from the extremity of said mold; links depending from said supporting members; cross arms adjustably supported on said links so as to contact with the bead portion of a casing suspended over said mold.

6. A casing vulcanizer comprising: a base plate; a jack screw vertically threaded through said base plate; a segmental, casing-shaped, electrically heated, mold pivotally supported on said jack screw; fit over said mold; chains depending from said band, there being notches in said base plate for receiving the links of said chains for locking said band down upon said mold; a heating plate having a concave face; and flexible means for clamping the concave face of said heating plate against said band.

7. A casing vulcanizer comprising: a base plate; a'jack screw vertically threaded through said base plate; a segmental, casing-shaped, electrically heated, mold pivotally supported on said jack screw; a flexible, metallic band shaped to fit over said mold; chains depending from said band, there being notches in' said base plate for receiving the links of said chains for locking said band down upon said mold; a heating plate having a concave face; and flexible means for clam ing the concave face of said heating plate against said band; a frame secured to said base plate; a vertically movable pressure member mounted in said frame; a bracket carried by said frame above said pressure member, said heating plate being provided with grooves for receiving said bracket.

8. In a vulcanizing device: a frame; a vertically movable push rod mounted in said frame; -a spring urging said push rod upwardly; a manually operated cam for pushing said push rod downwardly; a pressure head mounted on the upper extremity of said push rod; a bracket supported by said frame above said push rod; and a heating plate slidably engaging said bracket.

9. In a vulcanizing device: a frame; a vertically movable push rod mounted in said frame; a spring urging said push rod upwardly; a manually operated cam for pushing said push rod downwardly; a pressure head mounted on the upper extremity of said push rod; a bracket supported by said frame above said push rod; and a heating plate slidably engaging said bracket,

said frame and said bracket being mounted on independent pivots.

HAROLD V. JAMES.

a flexible, metallic band shaped to

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